Follow these rules when creating a migration for tasks in “Migration Rollups":

• Each task from rollups should have its own method, which is called in Up()
• For plugin migrations the method name should follow the template P<###>_<BriefTopicDescription>. Example: P132_CheckinClientInstaller.
• Include the Asana migration rollup task title in the method's comment
• Indicate which file(s) the migration was created in on the asana task